Chiral Extrapolation of Hadronic Observables

TL;DR

This paper discusses methods to accurately extrapolate lattice QCD results from large quark masses to physical hadron properties using chiral symmetry constraints, overcoming computational limitations.

Contribution

It introduces a model-independent approach for chiral extrapolation of hadronic observables from lattice QCD data at large quark masses.

Findings

Demonstrates the feasibility of accurate chiral extrapolation

Provides a framework based on chiral symmetry constraints

Addresses computational limitations in lattice QCD

Abstract

One of the great challenges of lattice QCD is to produce unambiguous predictions for the properties of physical hadrons. We review recent progress with respect to a major barrier to achieving this goal, namely the fact that computation time currently limits us to large quark mass. Using insights from the study of the lattice data itself, together with the general constraints of chiral symmetry, we demonstrate that it is possible to extrapolate accurately and in an essentially model independent manner from the mass region where calculations will be performed within the next five years to the chiral limit.